1304989933 has 8 divisors (see below), whose sum is σ = 1406748728. Its totient is φ = 1203427584.

The previous prime is 1304989891. The next prime is 1304989949. The reversal of 1304989933 is 3399894031.

It can be written as a sum of positive squares in 4 ways, for example, as 498316329 + 806673604 = 22323^2 + 28402^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1304989933 - 2⁹ = 1304989421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304989633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35160 + ... + 62017.

It is an arithmetic number, because the mean of its divisors is an integer number (175843591).

Almost surely, 2^1304989933 is an apocalyptic number.

1304989933 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1304989933 is a deficient number, since it is larger than the sum of its proper divisors (101758795).

1304989933 is a wasteful number, since it uses less digits than its factorization.

1304989933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98223.

The product of its (nonzero) digits is 629856, while the sum is 49.

The square root of 1304989933 is about 36124.6443996339. The cubic root of 1304989933 is about 1092.7875046558.

The spelling of 1304989933 in words is "one billion, three hundred four million, nine hundred eighty-nine thousand, nine hundred thirty-three".